各linux发行版扩容根卷并利用所有空闲容量的操作指南

# 非LVM系统：
sudo apt install cloud-guest-utils -y
sudo growpart /dev/sda 1  # 调整分区号
sudo resize2fs /dev/sda1  # ext4文件系统
# 或（xfs系统）
sudo xfs_growfs /
#LVM系统：
sudo growpart /dev/sda 2  # 假设LVM在sda2分区
sudo pvresize /dev/sda2
sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

# 非LVM系统
sudo yum install cloud-utils-growpart -y
sudo growpart /dev/sda 1
sudo xfs_growfs /  # CentOS默认xfs
# LVM系统
sudo growpart /dev/sda 2
sudo pvresize /dev/sda2
sudo lvextend -l +100%FREE /dev/centos/root
sudo xfs_growfs /dev/centos/root

# 默认LVM
sudo dnf install cloud-utils-growpart -y
sudo growpart /dev/vda 1
sudo pvresize /dev/vda1
sudo lvextend -l +100%FREE /dev/fedora/root
sudo xfs_growfs /

# Btrfs文件系统：
sudo growpart /dev/vda 2
sudo btrfs filesystem resize max /
LVM+XFS：sudo growpart /dev/vda 2
sudo pvresize /dev/vda2
sudo lvextend -l +100%FREE /dev/system/root
sudo xfs_growfs /
# 验证命令：
df -Th | grep -i /$
lsblk
vgs; lvs; pvs